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为探索切实有效的降菌措施,作者对电影院观众厅空气中细菌含量的变动情况及其影响因素作了系统观察。现将结果报告如下: 观察方法和条件(一)测定的指标及方法1.细菌总数: 采用沉降菌数法,即普通培养基暴露5分钟37℃培养48小时计数菌落(N),并用苏联奥梅梁斯基氏法推算空气中细菌含量(简化为172.15N=细菌总数/m~3); 2.CO_2浓度:作为空气微生物污染的间接指标,采用中和反应目测计时法(0.0024NNaOH 10ml作为吸收液); CO_浓度(%)=(对照点时间/采样点时间)×0.04%; 3.室温和相对湿度,用DHM2型通风干
In order to explore effective and effective method of reducing bacteria, the author systematically observed the changes of bacteria content in air of cinema auditorium air and its influencing factors. The results are reported as follows: Observation methods and conditions (a) of the indicators and methods of determination 1. The total number of bacteria: using sedimentation bacteria number method, the ordinary medium exposure for 5 minutes at 37 ℃ for 48 hours counting colonies (N), and the Soviet Union Austria The concentration of bacteria in the air was estimated by Meanski’s method (simplified as 172.15N = total number of bacteria / m ~ 3). 2.CO 2 concentration: As an indirect indicator of air microbial contamination, the neutralization reaction was used to visualize the time (0.0024N NaOH 10ml) Liquid); CO_concentration (%) = (control point time / sampling point time) × 0.04%; 3. room temperature and relative humidity,